Guys,

You have to add @import "~ng-uikit-pro-standard/assets/scss/core/msc/skins-pro"; import to the global styles.scss stylesheet to fix problem with skins.

Please take a look at the below code - this is my global styles.scss stylesheet where my custom-skin is working fine with MDB 8:

$skins: () !default;
$skins: map-merge((
  "custom": (
    "skin-primary-color": #fff,
    "skin-navbar": #fff,
    "skin-footer-color": #fff,
    "skin-accent": #fff,
    "skin-flat": #fff,
    "skin-sidenav-item": #fff,
    "skin-sidenav-item-hover": #fff,
    "skin-gradient-start": #fff,
    "skin-gradient-end": #fff,
    "skin-mask-slight": #fff,
    "skin-mask-light": #fff,
    "skin-mask-strong": #fff,
    "skin-sn-child": #fff,
    "skin-btn-primary": #fff,
    "skin-btn-secondary": #fff,
    "skin-btn-default": #fff,
    "skin-text": #fff
  )
), $skins);

/* You can add global styles to this file, and also import other style files */
@import '~ng-uikit-pro-standard/assets/scss/core/mixins';
@import '~ng-uikit-pro-standard/assets/scss/core/colors';
@import '~ng-uikit-pro-standard/assets/scss/core/variables';
@import '~ng-uikit-pro-standard/assets/scss/core/variables-pro';
@import '~ng-uikit-pro-standard/assets/scss/core/msc/skins-pro';

Best Regards,

Damian